Roslyn is a town in Day County, South Dakota, home to about 147 people across 0.2 square miles. Its ZIP code is 57261.
Mostly Roslyn
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| Nearest major airport | Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP)214 miles away |
|---|---|
| Closer regional airport | Aberdeen Regional Airport (ABR)43 miles away |
| Nearest city of 250,000+ | Minneapolis, MN211 miles away |
| Nearest city of 1 million+ | Chicago, IL553 miles away |
Straight-line distances from the center of Roslyn; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Roslyn had 181 residents in the 2020 census, down 20% since 2000.
It’s the 264th largest of 440 towns in South Dakota by population.
Day County grew from 12,254 residents in 1900 to 5,449 in 2020.
Day County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 4°F. About 22.6 inches of rain and melted snow fall in a typical year, with about 36 inches of snow.
Source: NOAA 1991–2020 climate normals, Waubay Natl Wild Life, SD weather station (12 miles away).
1,372 jobs at 226 businesses in Day County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Roslyn.
Nearest hospitals
Providers with an office here
| Physical and occupational therapists | 1 |
|---|
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Museums
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.